The effect of jugular or abomasal infusion of amino acids on milk yield in lactating cows fed a protein deficient diet
The influence of first-pass splanchnic metabolism was investigated by comparing the response of 5 lactating cows to an infusion of an amino acid mixture into the abomasum or a jugular vein over 5 d according to a complete block design. The basal diet and the amino acid infusion provided 71% and 14%...
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| Veröffentlicht in: | Reproduction, nutrition, development nutrition, development, 2002-01, Vol.42 (1), p.1-13 |
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| container_title | Reproduction, nutrition, development |
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| creator | Thivierge, M Carole Bernier, Jean F Dubreuil, Pascal Lapierre, Hélène |
| description | The influence of first-pass splanchnic metabolism was investigated by comparing the response of 5 lactating cows to an infusion of an amino acid mixture into the abomasum or a jugular vein over 5 d according to a complete block design. The basal diet and the amino acid infusion provided 71% and 14% of crude protein requirements, respectively. The jugular infusion increased (P = 0.01) milk yield by 0.80 kg in comparison to the abomasal infusion, but milk protein yield was not altered. The jugular infusion tended to increase (P = 0.06) the arterial concentration of total essential amino acids by 11% relatively to the abomasal infusion. Mammary plasma flow and net fluxes of amino acids and glucose were not affected by the infusion sites. Variations in essential amino acid concentrations suggest that splanchnic metabolism alters peripheral delivery of amino acids but the recirculation of amino acids within the animal decreased the impact of the first-pass splanchnic metabolism on lactational performances. |
| doi_str_mv | 10.1051/rnd:2002001 |
| format | Article |
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The basal diet and the amino acid infusion provided 71% and 14% of crude protein requirements, respectively. The jugular infusion increased (P = 0.01) milk yield by 0.80 kg in comparison to the abomasal infusion, but milk protein yield was not altered. The jugular infusion tended to increase (P = 0.06) the arterial concentration of total essential amino acids by 11% relatively to the abomasal infusion. Mammary plasma flow and net fluxes of amino acids and glucose were not affected by the infusion sites. Variations in essential amino acid concentrations suggest that splanchnic metabolism alters peripheral delivery of amino acids but the recirculation of amino acids within the animal decreased the impact of the first-pass splanchnic metabolism on lactational performances.</description><subject>Abomasum</subject><subject>Amino Acids - administration & dosage</subject><subject>Animal Nutritional Physiological Phenomena</subject><subject>Animals</subject><subject>Cattle - physiology</subject><subject>Development Biology</subject><subject>Dietary Proteins - administration & dosage</subject><subject>Dietary Supplements</subject><subject>Female</subject><subject>Food and Nutrition</subject><subject>Infusions, Intravenous - veterinary</subject><subject>Injections</subject><subject>Lactation - metabolism</subject><subject>Life Sciences</subject><subject>Milk - metabolism</subject><subject>Milk - secretion</subject><subject>Milk Proteins - analysis</subject><subject>Milk Proteins - metabolism</subject><subject>Protein Deficiency</subject><subject>Reproductive Biology</subject><issn>0926-5287</issn><issn>1297-9708</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpFkd1rFTEQxYMo9lp98l3yJIisTpJNsvGtFLXCBV_qc5jNR5ua3dTNbkv_e3O5F4WBgXN-HIY5hLxl8ImBZJ-X2X_hAG3YM7Jj3OjOaBiekx0YrjrJB31GXtV6BwBSavWSnDHOjBGa7cjD9W2gIcbgVloivdtutowLLQvFsUxYMdM0x62mMh98nNJcKLrkK23KlPJv-pRC9o2iGd2Ka5pvqCuPlcbgKdL7payhmT7E5FKYV-pTWF-TFxFzDW9O-5z8-vb1-vKq2__8_uPyYt85IdXajUyH6Dk4aaJyDCLTatDaM3DgesUE65mKvQHE2OteSt7H0eNo4jj0QnNxTj4cc28x2_slTbg82YLJXl3s7UEDMO0rYnhgjX1_ZNvJf7ZQVzul6kLOOIeyVas5CCWFauDHI-iWUusS4r9kBvZQiW2V2FMljX53it3GKfj_7KkD8RdvQYZU</recordid><startdate>200201</startdate><enddate>200201</enddate><creator>Thivierge, M Carole</creator><creator>Bernier, Jean F</creator><creator>Dubreuil, Pascal</creator><creator>Lapierre, Hélène</creator><general>EDP Sciences</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>1XC</scope><scope>VOOES</scope></search><sort><creationdate>200201</creationdate><title>The effect of jugular or abomasal infusion of amino acids on milk yield in lactating cows fed a protein deficient diet</title><author>Thivierge, M Carole ; 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| identifier | ISSN: 0926-5287 |
| ispartof | Reproduction, nutrition, development, 2002-01, Vol.42 (1), p.1-13 |
| issn | 0926-5287 1297-9708 |
| language | eng |
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| source | MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; EDP Sciences; Alma/SFX Local Collection |
| subjects | Abomasum Amino Acids - administration & dosage Animal Nutritional Physiological Phenomena Animals Cattle - physiology Development Biology Dietary Proteins - administration & dosage Dietary Supplements Female Food and Nutrition Infusions, Intravenous - veterinary Injections Lactation - metabolism Life Sciences Milk - metabolism Milk - secretion Milk Proteins - analysis Milk Proteins - metabolism Protein Deficiency Reproductive Biology |
| title | The effect of jugular or abomasal infusion of amino acids on milk yield in lactating cows fed a protein deficient diet |
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